ABC has released six sneak previews of the season premiere of Grey's Anatomy, "With You I'm Born Again," and it's clear that much like last season, when George's tragic death resonated throughout the premiere, the after effects of the shooting will not be soon forgotten.

In this first clip, Meredith makes a surprising discovery about her counselor, Dr. Andrew Perkins (James Tupper), and another member of the Seattle Grace surgical staff ...

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Dr. Perkins plays a major role in the episode, and you may be surprised at why he clears some doctors to return to work. Also, Derek has a change of heart about being Chief.

Follow the jump for five additional clips from this Thursday's much-anticipated seventh season premiere, and share your impressions with us by leaving comments below ...

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Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.